1. OBJ: Given activity sheet, notes, images and video SWBAT explain how concave and convex lenses work with 70% accuracy. DN: HW check- Reflection & Mirrors Booklet ACT: Introduction to: Lens, Convex Lens, Concave Lens What type of image is produced on the screen? (Candle-Lens-Screen Problem Set) Text, read p. 119-123, Work on Refraction and Lenses Booklet HW: Complete Refraction and Lenses Booklet; SVQ2 Quiz (erosion-magnetic force) week of Dec 8); Work on Sound & Light Review Sheets, Monday Light Exam, Dec 8

2. Candle Lens Screen Problem Reduced REAL IMAGE - upside down

3. Upcoming Sound & Light Exam What is sound ( longitudinal, compression wave ) Cause of sound (vibration) How sound travels Reflection (echo), diffraction, Interference Speed of Sound ( elasticity, density, temperature ) Ear Parts/Function bell jar/vacuum experiment

4. Upcoming Sound & Light Exam Luminous vs. illuminated Transparent, translucent, opaque Light & Color (primary, secondary, complementary), color triangle, pigments Reflection & Mirrors (image, virtual vs real images, diffuse vs regular reflection; planar, concave, convex mirrors) Refraction and Lenses [lens; convex (magnify) vs.concave (reduce) lenses] Human eye (parts & functions); nearsightedness vs. farsightedness and correction EM Spectrum [order (R,M,I,V,U,X,G), frequency, wavelength, helpful vs harmful]

5. Lens Notes Lens: curved piece of glass that refracts (bends) light Convex Lens (curved outwards) –Makes objects look larger (MAGNIFIES) –Produces REAL images –CONVERGES light rays

6. Lens Notes Concave Lens (curved inwards) –Makes objects look smaller (REDUCES) –Produces VIRTUAL images –DIVERGES light rays

7. Magnify Reduce

9. Convex Lens Concave Lens What Type of Lens?

10. CONVEX LENSCONCAVE LENS